Exam Professional Cloud DevOps Engineer topic 1 question 102 discussion

Voting for D

please read this how to use vertical pod autoscaler https://cloud.google.com/kubernetes-engine/docs/concepts/verticalpodautoscaler , so it suggest use Horizontal Pod Autoscaler (HPA) with the VPA to get the best of autoscaling.

To automate scaling for the JVM-based applications and microservices architecture in Google Kubernetes Engine (GKE), especially to handle varying loads throughout the day, the recommended approach is (Option D). This involves configuring the Horizontal Pod Autoscaler (HPA) to dynamically adjust the number of Pods based on application metrics. Additionally, enabling the cluster autoscaler allows for automatic scaling of the node pool, ensuring an adequate number of nodes to accommodate the varying workload. The HPA monitors resource utilization and adjusts the number of Pods, while the cluster autoscaler ensures that the underlying infrastructure scales up or down to meet the demand. This combined approach optimizes resource allocation, providing an efficient and automated solution for managing workload fluctuations in a cost-effective manner.

D is correct https://cloud.google.com/kubernetes-engine/docs/concepts/cluster-autoscaler?hl=es-419 https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/#support-for-metrics-apis

You want to automate scaling by only running enough Pods and nodes for the load. Answer D answers this requirement.

There is no Vertical Pod Autoscaler, and cluster autoscaler must be enabled. Therefor D appears the best answer.

Answer Should be D